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Boulder Creek above Dry Creek |
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Boulder Creek above Dry Creek |
For February, 2002 the WQI rating at Boulder Creek above Dry Creek (BC-aDC) was Medium (C) due to a WQI value of 58.97.
The chart below details the WQI calulations at this site. See the detailed explanation of the WQI method for more information.
| Parameter | Unit | Parameter Value | Q-value | Weight Factor | Total |
|---|---|---|---|---|---|
| DO% | % sat | 98.60 | 98.19 | 0.17 | 16.69 |
| Fecal Coliform | #/100 mL | 330.00 | 27.19 | 0.16 | 4.35 |
| pH | pH | 7.47 | 93.77 | 0.11 | 10.31 |
| Total Phosphate | mg PO4/L | 2.04 | 23.55 | 0.10 | 2.35 |
| Nitrates | mg NO3/L | 8.70 | 17.96 | 0.10 | 1.80 |
| Turbidity | NTU | 2.62 | 90.49 | 0.08 | 7.24 |
| Total Solids | mg/l | 321.00 | 54.84 | 0.07 | 3.84 |
| Totals (factors, total) | 0.79 | 46.59 | |||
| Adjusted WQI | 58.97 | ||||
The WQI is computed by converting measured Water Quality Parameters to "Q-Values" using charts developed by the National Sanitation Foundation (NSF) water quality scientists. The Q-Values are then multiplied by a weighting factor based on the importance of that water quality parameter. These values are totaled and then divided by the sum of the weight factors.